decennary decennal • decennia · · · Info · Definitions · Synonyms · Characters · · decennary · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a period of 10 years. Synonyms: decade, decennium. · · Noun Definition 1 Synonyms · · · decade · · Synonym 1 decennium · · Synonym 2 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 n latin small letter n U+006E r latin small letter r U+0072 y latin small letter y U+0079